161149875 has 16 divisors (see below), whose sum is σ = 268154016. Its totient is φ = 85946400.

The previous prime is 161149829. The next prime is 161149889. The reversal of 161149875 is 578941161.

It is not a de Polignac number, because 161149875 - 2⁸ = 161149619 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214492 + ... + 215241.

It is an arithmetic number, because the mean of its divisors is an integer number (16759626).

Almost surely, 2^161149875 is an apocalyptic number.

161149875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161149875 is a deficient number, since it is larger than the sum of its proper divisors (107004141).

161149875 is an equidigital number, since it uses as much as digits as its factorization.

161149875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429751 (or 429741 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The square root of 161149875 is about 12694.4820689936. The cubic root of 161149875 is about 544.1809372806.

The spelling of 161149875 in words is "one hundred sixty-one million, one hundred forty-nine thousand, eight hundred seventy-five".